linux模拟键盘按键

Automatic keyboard pressers are useful tools. However, it seems that there is no simple and easy to use automatic keyboard presser for Linux if you search for “automatic keyboard presser linux”. After some digging, I find using the xvkbd with some options is a good method for automatic keyboard pressing though it is not designed for this purpose.

自动键盘按下器是有用的工具 。 但是，如果您搜索“ Linux的自动键盘按键”，似乎没有简单易用的Linux自动键盘按键。 经过一番挖掘后，我发现使用xvkbd和一些选项是自动按键盘的好方法，尽管它不是为此目的而设计的。

一个例子∞ (One example ∞)

Let’s use one example here to introduce how to use xvkbd as a automatic keyboard presser: we want to refresh the browser every 5 seconds to check a webpage for changes. If you do it manually, you press Ctrl + r every 5 seconds. Let’s make the computer do it automatically for us while what we need to do is just to watch the screen while drinking a cup of tea.

让我们在这里使用一个示例来介绍如何将xvkbd用作自动键盘xvkbd器：我们希望每5秒刷新一次浏览器以检查网页是否有变化。 如果您手动执行此操作，则每5秒按Ctrl + r 。 让我们让计算机为我们自动完成它，而我们需要做的就是只是在喝杯茶的同时观看屏幕。

xvkbd发送一个字符串∞ (xvkbd sends a string ∞)

xvkbd has an option -text which can send the string to the focused window:

xvkbd有一个选项-text它可以将字符串发送到焦点窗口：

-text string
Send the string to the focused window (see also `-window' option).
If this option is specified, xvkbd will not open its window and terminate soon after sending the string.
The string can contain:\r - Return
\t - Tab
\b - Backspace
\e - Escape
\d - Delete
\S - Shift (modify the next character; please note that modify with ``\S'' will be ignored in many cases. For example, ``a\Cb\ScD\CE'' will be interpreted as a, Control-b, c, Shift-D, and Control-Shift-E.)
\C - Control (modify the next character)
\A - Alt (modify the next character)
\M - Meta (modify the next character)
\[keysym] - the keysym keysym (e.g., \[Left]), which will be processed in the similar matter with other general characters
\{keysym} - the keysym keysym (e.g., \{Left}), which will be processed in more primitive matter and can also be used for modofier keys such as Control_L, Meta_L, etc.; also, \{+keysym} and \{+keysym} will simulate press and release of the key, respectively
\Ddigit - delay digit * 100 ms
\xvalue - move mouse pointer (use "+" or "-" for relative motion)
\yvalue - move mouse pointer (use "+" or "-" for relative motion)
\mdigit - simulate click of the specified mouse button

With this option, we can send out Ctrl + r by:

使用此选项，我们可以通过以下方式发送Ctrl + r ：

xvkbd -text "\Cr"

脚本为自动按键∞ (The script as the automatic key presser ∞)

With the option of xvkbd, we can write our own automatic key presser with a bit bash script to repeatedly invoke xvkbd.

使用xvkbd选项，我们可以使用一些bash脚本编写自己的自动按键，以重复调用xvkbd 。

Here comes the script that automatically refresh the browser (the active window).

这是自动刷新浏览器（活动窗口）的脚本。

while true; do xvkbd -text "\Cr"; sleep 5; done;

Execute it in a shell, make the browser focused and then you can watch the page “automatically” refreshed.

在shell中执行它，使浏览器聚焦，然后您可以观看“自动”刷新的页面。

When you want to stop the “automatic keyboard presser”, just press Ctrl+c in the shell window.

当您要停止“自动键盘按下器”时，只需在外壳程序窗口中按Ctrl+c 。

More interesting and complex key pressers can be made using the functions provided by xvkbd (especially the \D to delay a little while).

可以使用xvkbd提供的功能（尤其是\D稍有延迟）来制作更有趣，更复杂的按键。

翻译自: https://www.systutorials.com/automatic-keyboard-presser-on-linux/

linux模拟键盘按键